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SuSE alert SUSE-SA:2005:036 (sudo)

From:  Thomas Biege <>
Subject:  [suse-security-announce] SUSE Security Announcement: sudo (SUSE-SA:2005:036)
Date:  Fri, 24 Jun 2005 14:43:23 +0200

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: sudo Announcement ID: SUSE-SA:2005:036 Date: Fri, 24 Jun 2005 12:01:00 Affected Products: 8.2, 9.0, 9.1, 9.2, 9.3 Vulnerability Type: race condition, arbitrary code execution Severity (1-10): 5 SUSE Default Package: yes Cross-References: CAN-2005-1993 Content of This Advisory: 1) Security Vulnerability Resolved: race condition in pathname handling Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: - cacti - gaim - gedit - evolution - postgresql - quanta - kdewebdev3 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion Sudo(8) allows the execution of commands as another user and gives the administrator more flexibility than su(1). A race condition in the pathname handling of sudo may allow a local user to execute arbitrary commands. To exploit this bug some conditions need to be fulfilled. The attacking user needs to be listed in the sudoers file, he is able to create symbolic links in the filesystem, and a ALL alias- command needs to follow the attackers entry. 2) Solution or Work-Around It is recommended to install the updated packages. 3) Special Instructions and Notes none 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command rpm -Fhv <file.rpm> to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package. Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web. x86 Platform: SUSE Linux 9.3: b66d5d132049853629a3bcac6ccab485 patch rpm(s): 0be64a8e4904a4d291d8829f6b6041c6 source rpm(s): a069125224a78bc300fcd4dcb96e40d3 SUSE Linux 9.2: 33bc6c32f618d10f577dab89ea99ece6 patch rpm(s): 760a5affabbaa042f4415bbefd6e368e source rpm(s): e9e3038d21f011fadc8699edd3eeb8cc SUSE Linux 9.1: a38b0526a497306827d0c80c944cbb29 patch rpm(s): 22199f86b112264ca314089bebedfac7 source rpm(s): ad22ffaf4a001e9a5de6a9c619098b15 SUSE Linux 9.0: d6f2c65abb6ac1ffc869427a261e1c35 patch rpm(s): cad88b3e9619781af28f2505ac398722 source rpm(s): 1fa8cd28e9c07bbd88674656b8847939 SUSE Linux 8.2: aa1a93a017259335bbf87eda21b5e45b patch rpm(s): b507d49bc18be0f2c3c70f41f15f1849 source rpm(s): cb3baefafd723842bd9b549762bf68a9 x86-64 Platform: SUSE Linux 9.3: f4cad71e54f0f56b9fd5257228d3e94d patch rpm(s): ac400e62fe3ce21ac7aa6a5e0da79977 source rpm(s): a069125224a78bc300fcd4dcb96e40d3 SUSE Linux 9.2: 1dea5ee72634fae4c9124fe5926874f4 patch rpm(s): eb9db1ea2a1cd7bb3923c4d59774b965 source rpm(s): e9e3038d21f011fadc8699edd3eeb8cc SUSE Linux 9.1: d3890913e3fb16ef2899aa681d645de0 patch rpm(s): fee49fd93b75174c7229fde365fbed74 source rpm(s): b0b4cdd3765249f8f4f80ed17f182259 SUSE Linux 9.0: f110cef5bb1fba01340235e035d56294 patch rpm(s): 1bfecf26f55a8297d75ff8123ee48f59 source rpm(s): 89a5bcdc68a459b54be612c26bcd1250 ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: - cacti New cacti packages are available soon to fix a SQL injection bug a two bugs that can lead to remote command execution. - gaim New gaim packages are available for download. This update fixes the following security problems which allowed malicious users to crash other users' gaim client: * crashes via malformed MSN malformed message (CAN-2005-1934, CAN-2005-1262) * crash via specially named file sent via Yahoo (CAN-2005-1269) * crash via invalid Jabber file transfer request (CAN-2005-0967) * crash via special IRC messages (CAN-2005-0966) * crashes via malformed HTML tags (CAN-2005-0965, CAN-2005-0208, CAN-2005-0473) * crash via malformed SNAC packet sent via AIM/ICQ (CAN-2005-0472) - gedit Gedit had a format string bug in the filename handling, potentially allowing an attacker to execute arbitrary code. This bug has been fixed and packages are available on our FTP servers (CAN-2005-1686). - evolution A denial-of-service bug has been fixed in evolution. New packages can be found on our FTP servers. - postgresql* Updated packages are available on our FTP server. This update fixes the following security issues: * load arbitrary shared libraries and execute code via the LOAD extension (CAN-2005-0227) * bypass the EXECUTE permission check for functions by using the CREATE AGGREGATE command (CAN-2005-0244) * a heap based buffer overflow (CAN-2005-0245) * denial of service through intagg contrib module (CAN-2005-0246) * execute arbitrary code due to bugs in several SQL commands (CAN-2005-0247, CAN-2005-1409, CAN-2005-1410) This update also fixes the following non-security issues: * A race condition that allowed a transaction to be seen as committed for some purposes (eg SELECT FOR UPDATE) slightly sooner than for other purposes. - quanta/kdewebdev3 Kommander executed scripts from untrusted sources without further checking. This has been disabled now. New packages are available. ______________________________________________________________________________ 6) Authenticity Verification and Additional Information - Announcement authenticity verification: SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature. To verify the signature of the announcement, save it as text into a file and run the command gpg --verify <file> replacing <file> with the name of the file where you saved the announcement. The output for a valid signature looks like: gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team <>" where <DATE> is replaced by the date the document was signed. If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc - Package authenticity verification: SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and the integrity of a package needs to be verified to ensure that it has not been tampered with. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or RPM package: 1) Using the internal gpg signatures of the rpm package 2) MD5 checksums as provided in this announcement 1) The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, replacing <file.rpm> with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from with the key ID 9C800ACA. This key is automatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and at the end of this announcement. 2) If you need an alternative means of verification, use the md5sum command to verify the authenticity of the packages. Execute the command md5sum <filename.rpm> after you downloaded the file from a SUSE FTP server or its mirrors. Then compare the resulting md5sum with the one that is listed in the SUSE security announcement. Because the announcement containing the checksums is cryptographically signed (by, the checksums show proof of the authenticity of the package if the signature of the announcement is valid. Note that the md5 sums published in the SUSE Security Announcements are valid for the respective packages only. Newer versions of these packages cannot be verified. - SUSE runs two security mailing lists to which any interested party may subscribe: - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to <>. - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an e-mail to <>. For general information or the frequently asked questions (FAQ), send mail to <> or <>. ===================================================================== SUSE's security contact is <> or <>. The <> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, the clear text signature should show proof of the authenticity of the text. SUSE Linux Products GmbH provides no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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